Mecanismos de armazenamento

InnoDB

Supports transactions, row-level locking, foreign keys and encryption for tables

[ Variáveis | Pool de buffer | Status do InnoDB ]

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2026-01-27 13:32:58 0x7f41a805d700 INNODB MONITOR OUTPUT
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Per second averages calculated from the last 27 seconds
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BACKGROUND THREAD
-----------------
srv_master_thread loops: 25699 srv_active, 0 srv_shutdown, 22653 srv_idle
srv_master_thread log flush and writes: 48344
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SEMAPHORES
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OS WAIT ARRAY INFO: reservation count 78712
OS WAIT ARRAY INFO: signal count 61259
RW-shared spins 0, rounds 30003, OS waits 14916
RW-excl spins 0, rounds 8128, OS waits 287
RW-sx spins 7, rounds 191, OS waits 6
Spin rounds per wait: 30003.00 RW-shared, 8128.00 RW-excl, 27.29 RW-sx
------------------------
LATEST FOREIGN KEY ERROR
------------------------
2026-01-27 01:02:14 0x7f419a8c8700 Error in foreign key constraint of table `GES_TRAN`.`Bus`:
Create  table `GES_TRAN`.`Bus` with foreign key constraint failed. Referenced table `GES_TRAN`.`Chauffeur` not found in the data dictionary near 'FOREIGN KEY (chauffeurId) REFERENCES Chauffeur(id)
)'.
------------
TRANSACTIONS
------------
Trx id counter 132917
Purge done for trx's n:o < 132917 undo n:o < 0 state: running but idle
History list length 1
LIST OF TRANSACTIONS FOR EACH SESSION:
---TRANSACTION 421394945282552, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421394945278296, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
---TRANSACTION 421394945274040, not started
0 lock struct(s), heap size 1136, 0 row lock(s)
--------
FILE I/O
--------
I/O thread 0 state: waiting for completed aio requests (insert buffer thread)
I/O thread 1 state: waiting for completed aio requests (log thread)
I/O thread 2 state: waiting for completed aio requests (read thread)
I/O thread 3 state: waiting for completed aio requests (read thread)
I/O thread 4 state: waiting for completed aio requests (read thread)
I/O thread 5 state: waiting for completed aio requests (read thread)
I/O thread 6 state: waiting for completed aio requests (write thread)
I/O thread 7 state: waiting for completed aio requests (write thread)
I/O thread 8 state: waiting for completed aio requests (write thread)
I/O thread 9 state: waiting for completed aio requests (write thread)
Pending normal aio reads: [0, 0, 0, 0] , aio writes: [0, 0, 0, 0] ,
 ibuf aio reads:, log i/o's:, sync i/o's:
Pending flushes (fsync) log: 0; buffer pool: 0
863 OS file reads, 330685 OS file writes, 171296 OS fsyncs
0.00 reads/s, 0 avg bytes/read, 4.48 writes/s, 3.11 fsyncs/s
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INSERT BUFFER AND ADAPTIVE HASH INDEX
-------------------------------------
Ibuf: size 1, free list len 0, seg size 2, 0 merges
merged operations:
 insert 0, delete mark 0, delete 0
discarded operations:
 insert 0, delete mark 0, delete 0
Hash table size 69257, node heap has 2 buffer(s)
Hash table size 69257, node heap has 11 buffer(s)
Hash table size 69257, node heap has 2 buffer(s)
Hash table size 69257, node heap has 25 buffer(s)
Hash table size 69257, node heap has 1 buffer(s)
Hash table size 69257, node heap has 3 buffer(s)
Hash table size 69257, node heap has 26 buffer(s)
Hash table size 69257, node heap has 0 buffer(s)
2.70 hash searches/s, 0.56 non-hash searches/s
---
LOG
---
Log sequence number 73720911
Log flushed up to   73720754
Pages flushed up to 73718396
Last checkpoint at  73716974
0 pending log flushes, 0 pending chkp writes
103358 log i/o's done, 2.00 log i/o's/second
----------------------
BUFFER POOL AND MEMORY
----------------------
Total large memory allocated 285212672
Dictionary memory allocated 176352
Buffer pool size   16024
Free buffers       15010
Database pages     944
Old database pages 328
Modified db pages  50
Percent of dirty pages(LRU & free pages): 0.313
Max dirty pages percent: 75.000
Pending reads 0
Pending writes: LRU 0, flush list 0, single page 0
Pages made young 0, not young 0
0.00 youngs/s, 0.00 non-youngs/s
Pages read 704, created 240, written 202861
0.00 reads/s, 0.00 creates/s, 2.11 writes/s
Buffer pool hit rate 1000 / 1000, young-making rate 0 / 1000 not 0 / 1000
Pages read ahead 0.00/s, evicted without access 0.00/s, Random read ahead 0.00/s
LRU len: 944, unzip_LRU len: 0
I/O sum[0]:cur[0], unzip sum[0]:cur[0]
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ROW OPERATIONS
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0 queries inside InnoDB, 0 queries in queue
0 read views open inside InnoDB
Process ID=906, Main thread ID=139919188010752, state: sleeping
Number of rows inserted 10, updated 46919, deleted 0, read 5449618
0.00 inserts/s, 0.74 updates/s, 0.00 deletes/s, 1.41 reads/s
Number of system rows inserted 0, updated 0, deleted 0, read 14055
0.00 inserts/s, 0.00 updates/s, 0.00 deletes/s, 0.00 reads/s
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END OF INNODB MONITOR OUTPUT
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